Dumpinq oak



(No Model.) 4 Sheets-Sheet 1. J. DUFF.

DUMPING GAR.

No. 409,395. Patented Aug. 20, 1889.

2 t e e h S m e, e h S 4 R M G N H m D (No Model.)

No. 409,395. Patented'Aug. 20, 1889.

4 Sheets-Sheet 3.

(No Model.)

J DUFF DUMPING GAR.

Patented Aug. 20

4 Sheets-Sheet 4. J DUFF DUMPING GAR.

(No Model.)

Patented Aug. 2 0, 1889.

UNITED STATES PATENT. OFFICE.

JOSEPH DUFF, OF LANSING, ONTARIO, CANADA.

DUMPING-OCAR.

SPECIFICATION forming part of Letters Patent No. 409,395, dated August20, 1889.

Application filed December 17, 1888. Serial No. 293,786. (No model.)Patented in Canada January 16, 1889, No. 30,569.

To aZZ whom it may concern.-

Be it know 11 that I, JOSEPH DUFF, gentleman, of Lansing, in the countyof York and Province of Ontario, Canada, have invented certain new anduseful Improvements in Dumping-Cars; and I do hereby declare that thefollowing is a full, clear, and exact description of the same.

This invention has been patented to me by Canadian Letters Patent No.30,569, dated January 16, 1889.

This invention relates to d umping-cars such as are used in constructingand ballasting railroads, excavating and filling in, canal and dockbuilding, for carrying ores, mining coal, and like purposes. 7

Du mping-cars constructed according to my invention are applicable foruse either singly or in a train, and the main feature is the tilting ofthe car (thus discharging the contents) by means of a compressed-airarrangement connected with each car and with a suitable compressorlocated upon the engine, tender, or upon any special car or van includedin the train.

A convenient arrangement of apparatus for carrying out my invention isshown in the accompanying drawings, forming part of this specification,and for full comprehension of the principles and details of constructionreference must be had thereto, similar letters of reference indicatinglike parts.

In said drawings, Figure 1 is a plan (top) view of a dumping-carconstructed according to my present invention. Fig. 2 is a plan lookingat the under side of the main platform. Fig. 8 is a longitudinal sectionon line X X, Fig. 1. Fig. at is a transverse section on line Y Y, Fig.1, the bucket being at rest. Fig. 5 is an end view of the car, thebucket being represented as tilt-ed or in position for discharging theload. Fig. (3 is a sectional end View showing a modification of thetilting arrangement. Fig. 7 is a detail of the air-cylinder and slidingvalve.

To .void complication I have not shown the truck or wheels of the car,but simply indicate their general position by dotted lines, these beingof any suitable construction and connected with the platform orcar-frame in the usual or any approved manner.

A represents the main platform, bed, or frame of any suitableconfiguration, the apparatus which immediately accomplishes thedischarge of the load being situated on the upper side of this platform,while the aircylinders, which are connected with the entire system, andtheir immediate adjuncts are preferably carried below the platform.

13 is the tilting-box or bucket, in this case made, preferably, in theform of a double scoop to increase its capacity, and also in order toallow the load to be discharged at either side of the track.

The apparatus illustrated in the drawings is in every case made double,(withthe exception of certain springs, which are transferable from oneposition to another,) this being for the purpose of allowing dumping totake place from either side of the car; but as the apparatus is fixed atstarting, so that it will only work in one direction, I have simplyshown the different parts in the one position, but will hereinafterexplain their double or alternative operation.

The box 13 is journaled in suitable standards Z) Z), carried on theupper side of the platform, and to the projecting end of the axis ofsuch box I mount asegmental gear C, and arrange the same to mesh into asliding rack D, moving in proper guides a a upon the platform, and saidsliding rack has two transverse slots (Z (Z, (only the former of whichis now in operation for the reason above ex plained,) this slot beingadapted to receive a pin 6 projecting from a sliding bar E parallel withthe rack D, which travels close alongside a longitudinally slotted orgrooved bar F, between which and a similar bar F, lying paralleltherewith at or near the edge of the platform A, the operating-cylinderG is located. This cylinder is adapted foruse with compressed air, andhas at its ends chambers g 'g, (the former of which is only now inoperation,) said chambers being supplied through short branches marked g9 respectively, which in turn communicate with a longitudinal pipe 9from which flexible pipes g and 9 lead down to the air-cylindersunderneath the platform.

G is a piston working in the cylinder G and adapted to be operated fromeither of the chambers g g. This piston by preference does not enterthese chambers; but the piston-rod G2 passes out through the heads ofboth. and carries upon its ends cross-heads G G, which work in thegrooved longitudinal bars F F, as shown particularly in Fig. 1.

K and L are the main air-pipes leading from the compressor (not shown)and connected between the cars of the train as usual--say inair-brakesor in any approved manner. The former pipe connects with anair-cylinder K, carried underneath the platform, having a sliding valveor piston K (shown in detail in Fig. 7,) the continuationpipe (alsomarked K) leading off to the next car from the port in the same manneras that described in another application for patent bearing even dateherewith. The pipe g also connects with this cylinder K at a port 70,and from a port 7& connection is made by a short pipe 70 with areservoir (or reserve cylinder) L, which in turn is supplied by the pipeL, extending through outthe train, as in my said former application,this reservoir being also in communication by a pipel with an extracylinder M, (shown in Fig. 5 and dotted in Fig. 2,) which is for thepurpose of operating the single car, the same being thrown intooperation by means of a pivoted hand-lever N, in all respects similar inconstruction and operation to that described in my former application,and therefore needing no description here, further than to say that thepipe leads from this cylinder to the pipe g and to the chamber 9 of theoperating-cylinder G.

2 2 and 3 3 are cocks in the pipe g and branches 9 respectively, the useof which will be hereinfter explained.

Then the box or bucket B is at rest in its horizontal position and thepiston G is close up to the chamber 9, springs 5 5 are connected to thecross-head G and to the tops of the bars F F, and thus retain the partsin the position shown in Fig. 1@. e., just ready for this particular carto be dumped-it being understood that when the hand-lever N is throwninward it opens the connections between the extra cylinder M and thepipe 9 as in Fig. 1, and the cooks 2 2 being opened previously air isadmitted to the chamber 9 of the cylinder G, and thus forces back thepiston G, the piston-rod drawing upon the sliding bar E, and causing itto travel longitudinally until the pin 6 is at the opposite end of theslot d in the sliding rack D, when by pressure against said opposite endof the slot it forces said rack along the guides or a, and by leveragebetween said rack and the segmental gear C causes the box B to tilt inthe direction shown in Fig. 5, and thus discharge the load in thatdirection. hen the hand-lever N is locked in its outward position, thebucket is in its normal position and the air shut off.

P P are small rollers impinging upon the upper edge of the sliding bar Eand held down upon same by being journaled in the upper ends of verticalbars P P the same passing down through apertures in the platform A andpivoted to cross-heads or cranks Q Q, which are in turn pivotedcentrally to hangers Q Q depending from the lower side of the platform.To the opposite ends of said cross-heads or cranks are pivoted verticallocking-bars R R, which in turn pass up through the platform closebehind the sliding rack D and segmental gear 0, which has a projection Con its side, against which the locking-bars R R will bear alternatelyaccording to the direction in which the box is to be tilted, thusholding it firmly in its normal position. Springs 4" 7" also extend fromthe platform into connection with the crossheads Q Q near their junctionwith the locking-bars, and thus give the requisite tension to thelatter.

In dumping the car, as before mentioned, the movement of the sliding barE underneath the rollers P P will serve to bring the same into theposition shown in Fig. 5, when the roller P descends the incline e,(assisted by the drawing action of the spring 0",) and at the same timethe roller P ascends the incline e at the opposite end of the bar E andrides upon its upper edge or into the position shown in said Fig. 5.These rollers and their connections serve to stiifen the action andsupport the operation of the cylinder G.

When it is desired to tilt the box 13 in the reverse direction, thesprings 5 5 are released from the cross-head G and connected to thecross-head G the cocks 2 2 being closed and the extra cylinder M alsoshut off from. the air-pressure from the cylinder L by locking thehand-lever N in its outward position, the main air-pipe K and thecylinder K then supplying the pressure to the chamber g of the cylinderG, and thus acting upon the piston from that end. The cocks 3 3 are nowopen and the connection for the air made b the pipe g, thecontinuationpipe K leading to the next car being closed off by a propercock if it is not desired to dump more than the one car-load at a time,or left open if the adjoining car is to be operated upon.

It is to be understood that ageneral system of cocks will be providedfor the several airpipes, and the system of valves in the air-cylinderswill be the same as those described in in y other application; or anyother well-known or suitable arrangement may be adopted at thediscretion of the builder, these being points not involving any specialinvention for the present case, and therefore it is not necessary that Ishould further illustrate or explain them.

In place of the toothed segment 0 and slid ing rack D, I may adopt asystem of levers such as I have shown in the modification, Fig. 6, fortilting the box B. In this case I affix rigidly to the shaft of the boxa cross head S, and to the ends thereof I pivot levers T T, which extenddownward, (preferably through the platform A,) and are again pivoted toanother cross-head U, which is firmly fixed upon a short shaft V,properly journaled in hangers V from the platform. To this shaft isfirmly connected an upright lever XV, adapted to oscillate therewith,and in" the upper end of same I form two L-shaped grooves or slots 10 w,in either one of which the pin 6, carried by the sliding bar E,will beinserted according to the direction in which the dumping or tilting ofthe box 13 is to be made.

The operation of the sliding bar E, the rollers P P and theirconnections, and the cylinder G and its connections being precisely thesame, and the segment and rack being, mechanically speaking, levers,this modification will require no further description.

I may further vary the details of construction and modify thearrangement of parts without departing from the principles of myinvention.

hat I claim, and desire to secure by Letters Patent, is as follows:

1. In combination, the main frame, the bucket pivoted to tilt in eitherdirection, a cylinder, a piston therein, pipe-connections from the endsof the cylinder to a suitable fluid-power supply, andoperating-connections between the piston and the bucket, whereby it maybe tilted in either direction by the piston, substantially as described.

2. In combination, the main frame, the bucket pivoted to tilt in eitherdirection, a cylinder, a piston therein having its pistonrod extendingthrough the cylinderhead, pipe-connections from a source of powerleading to the two ends of the cylinder, a sliding bar in connectionwith the piston-rod, and operating-connections between said bar and thepivoted bucket, substantially as described.

3. In a dumping-car, the combination, with a main platform and a box orbucket carried thereby and capable of being tilted in either direction,a compressed-air cylinder carried by such platform and havingcross-heads in connection with its piston-rod operating said slidingframe, and adapted to move the latter in either directionlongitudinally, an air-cylinder having a sliding valve and supplied froman ordinary compressor and connected to both ends of saidoperating-cylinder, substantially as and for the purpose described.

4. In a dumping-car, the combination, with the platform and a bucketadapted to be tilted in either direction, of the segmental gear C,connected with said box or bucket, sliding rack D, having slots (Z d,sliding bar E, having pin 6 fitting into one of said slots, andcompressed-air cylinder G, the piston-rod of which has cross-heads inconnection with said sliding bar, substantially as and for the purposespecified.

5. In combination, the main platform, the bucket pivoted to tilt ineither direction, locking-bars R R, for holding the bucket in position,a cylinder having pipe-connections from each end to a source of power,whereby the. piston therein may be moved in either direction, andoperating-connections from the piston to the bucket, said connectionsacting upon the bars R R to withdraw one or the other to allow thebucket to turn, substantially as described.

0. The combination, with the segmental gear 0, having projection C andwith the sliding bar E, of the rollers I P, vertical bars I P carryingsaid rollers, cross-heads or cranks Q Q, hung from the platform andconnected with the lower ends of said bars, the locking-bars R R,adapted to look the segmental gear, and suitable tension-springs, allsubstantially as and for the purpose specified.

'7. The combination, with the sliding bar E and cylinder G, havingchambers g and g, a single piston, and a piston-rod with crossheads Gand G on its ends, of the air-pipe 9 connected to the chambers of saidoperating-cylinder and to the air-cylinders K and M, and air-pipes K andL, all arranged substantially as and for the purpose specified.

Toronto, Ontario, October 9, 1888.

JOSEPH DUFF.

Witnesses:

R. A. KELLOND, T. R. CAMERON.

